Genesis G80 vs Mercedes-Benz E300

What's the difference?

Overall, then, the flagship G80 tries to be docile Clark Kent and the amazing Superman in one. As such, it stretches itself trying to be both a luxury GT and high-functioning sports sedan.

But while it doesn’t quite achieve either perfectly the Genesis gets near enough for most – especially at its exceptional price point.

The E-Class is stacked with kit, looks great, and is an effective and comfortable way to get around in built-up areas or across the countryside.

While it’s not the most dynamically engaging - it’s pipped by its Bavarian rival there - it offers more comfort-oriented features than most, and the cabin is a pleasant place to spend a day driving.

If you're disposed towards stumping up the asking price, the extra outlay for the 'Plus Package' will probably be most relevant to you if you’re covering long distances due to the Airmatic suspension.

Otherwise, even a simple-spec E300 provides a step up from what you might expect from an executive sedan.

Note: CarsGuide attended this event as a guest of the manufacturer, with accommodation and meals provided.

Australia never saw the original 'BH'-series Genesis, which was created primarily with US buyers in mind to be a 5 Series alternative at a 3 Series price, complete with rear-wheel drive and advanced chassis dynamics.

Hyundai spun the series off as a stand-alone brand in the mid-2010s within the second-gen 'DH' Genesis’ run (that did include Australia) from 2015, which is when the G80 badge arrived, while the 'RG3' redesign you see here launched in 2020.

What you’re seeing here, then, is a facelift of a half-decade-old design, and doesn’t it give off Bentley vibes? From that blocky nose with its latticed grille to the sleek profile, the five-metre long by two-metre wide G80 passes for a Continental GT wannabe. Particularly in SL guise. And a convincing one at that.

When it comes to the interior, look around. A 27-inch OLED touchscreen takes in the crisp digital instrumentation and slick multimedia displays.

We like the configurable widgets that come complete with pictures for instant recognition, and the fact that Genesis decided to put an equally-user-friendly climate-control screen below, so eyes never need to leave the road once you quickly learn where all the switchgear is.

Evolution rather than revolution is obvious when it comes to the E-Class’ styling, but that’s in Mercedes’ best interests, because it’s still a good-looking thing, and being a bit subtle is warranted in the executive sedan game.

The biggest changes come in the headlights and tail-lights. Up-front there are now more than one million pixels in the LED headlights, which have adaptive high beam as standard and are more connected to the grille via black trim, as has been seen in EQ electric models.

Underneath, the bumper now features an AMG-style 'A-wing' apron as part of the 'AMG Line' exterior package as standard. A set of 20-inch AMG alloys are also included.

To the rear, and the digital tail-lights feature a Mercedes-Benz star motif, making its lighting signature now more recognisable from behind.

The German Rainbow is well-represented with mostly shades of grey, black, or white available, though 'Verde Silver Metallic' is a slightly retro green, and 'Nautic Blue Metallic' is a subtle and classy tone.

The daring ‘Manufaktur’ shade of 'Patagonia Red Metallic' is a $2500 option, as is 'Opalite White Bright' while 'Alpine Grey Solid' is $2900.

Size may not be everything, some say, but it sure says a lot when a medium-sized luxury sedan is long enough to swing it with some large Germans. And in this case, the impressive dimensions are enhanced by a three-metre-plus wheelbase.

Behind the soft-close doors, you’re met with a cabin defined by the luxury of space and isolation from the outside world – just what you’d expect from a full-sized flagship sedan. There’s room to stretch in all five seats.

Plus, in the SL, the seats and chunky steering wheel silently whirr out of the way for easier entry and egress, before sliding back to their previous-memory positions.

The front seats are among the best we’ve experienced in a long time, holding and caressing in all the right places. Switching drive modes increases bolstering and/or support, whilst longer thighs will appreciate the extendable ottoman feature. Hot/cold control and a prodding massage function further enhances the users’ pleasure.

As in all Hyundai products the digital instrumentation and media touchscreen are paragons of simplicity and clarity.

Actual knobs for audio, tuning, fan and temperature controls flank these, along with buttons for 'Home', 'Menu', 'Driving Modes', 'Cameras' and parking sensors.

So thoughtful, so easy. Even vision isn’t too bad, aided of course by the surround-views available. This is quite an unintimidating vehicle to judge when parking despite its length.

Issues? The gear selector is the circular variety Jaguar debuted with the original XF during the late 2000s and is a bit clumsy to use; sited in prime console real estate, the cupholder lid is set-up for left-hand drive, meaning it provides a (minor) obstacle for the driver when open; the test car’s carbon-fibre-look trim won’t be to everybody’s taste and there’s no walk-to/away automatic central locking.

Meanwhile, the rear seat is in the spirit of a true limo.

Wide doors allow for easy entry/egress, revealing impressive levels of space for shoulders, hips, knees and feet (though headroom might be a mite tight for taller dos due to the sunroof). The left-side rear occupant can re-position the seat in front automatically to boost legroom even more.

Airliner premium-economy class-style backrest reclination is included. And you can sink yourself or your loose digits into the tactile and aromatic bliss of the perforated Nappa leather, thick pile carpet, suede trimmed pillars and ceiling and quality textures, further upping the luxury ante.

The large folding armrest facilitates access to heating/ventilation, audio, a sunblind, cupholders, phone chargers, USB-C ports and hidden storage.

The fortunate rear-seat passengers also face air vents and a separate climate control panel from the front-seat riders. So decadent. This was clearly designed for chauffer opulence and it shows. Very difficult to fault.

But further back, it isn’t so bountiful. Literally.

The pleasingly plush boot measures in at a smallish 424 litres, and that’s almost 100L down on a 520i’s. And while it comes with a ski or 'Bunnings port', simple folding backrests would have been more practical, particularly for car reviewers who occasionally need to transport their bicycle.

Oh well, that’s what SUVs are for.

The space-saver spare, in lieu of the hated tyre repair kit, is welcome, though. Thank you.

Inside, the E-Class should feel familiar to anyone who’s spent time in a recent Benz, though the Superscreen might be the main point of difference. It’s an immediately comfortable place, though, with a relatively visually busy cabin.

The seats and their adjustability mean most drivers and passengers, regardless of height and size, should feel supported (and ideally relaxed), while touch-points are mostly either leather upholstery or digital screens.

The steering wheel, also seen in plenty of other Mercedes models, is a bit of a let-down, however, with its haptic touch pads on a slightly busy two-tier layout. This millennial found it irritating, surely too will the usually older E-Class buyer.

There are a few other small annoyances, one being that the MBUX Assistant sometimes won’t hear a command, or that not everything seems to be able to be controlled by it. The climate control vent positions are electrically adjustable to certain pre-sets through the menu, but the MBUX Assistant isn’t able to do this for you.

And while the driver display and central multimedia screen are fairly user-friendly, it’s not always immediately apparent what the quickest way to find some information or a setting is.

Our test car was fitted with the 'Plus Package', which means four-zone climate control available to the rear seats, which my 180cm-tall self found spacious with plenty of headroom, kneeroom, and even a fair bit of room under the driver’s seat.

Behind the rear seats, there’s a generous 540 litres of boot space, exactly the same capacity as the previous generation E-Class.

While cross-shopping the E-Class and a BMW 5 Series would normally be relatively easy, the Merc’s $131,500 starting price, before on-road costs, puts it plenty north of the base 520i, the only petrol one available, at $114,900. The electric i5 eDrive40 starts from $155,900, more than $20K over the Mercedes.

But the E-Class is stacked with features as standard, and while there are a couple of option packs, Mercedes Australia has tried to streamline the most popular features and specifications into the E300.

Its $131,500 price gets you a tech-heavy sedan with Merc’s latest 'MBUX' system housed in a visually impressive, if perhaps unnecessary, 'Superscreen' dash.

The dual-screen set-up incorporates a main 14.4-inch central multimedia touchscreen and a 12.3-inch display for the passenger, allowing the driver to keep, for example, a map visible while a passenger sorts out media or comfort settings.

The system is also designed to avoid taking users through sub-menus, though can be bypassed by wireless Android Auto or Apple CarPlay.

It also features a selfie camera mounted to the dash, which is disabled for the Australian market at present. Mercedes-Benz Australia hopes to change this soon.

Mercedes also plans to allow the MBUX system to learn what settings and functions will be most useful to the driver under certain conditions, but currently users are able to manually create so-called ‘Routines’ such as setting the climate control and seats to warm up if it’s below a certain temperature, and can even adjust the ambient lighting to a warmer colour.

More automation comes in the brand’s MBUX ‘Hey Mercedes’ system, which can now respond to commands without the driver needing to say “Hey Mercedes”. 

Heated and vented front seats, leather upholstery, wireless phone charging, and a 17-speaker Burmester sound system with Dolby Atmos 4D sound are also standard - the latter being a clever feature that positions different elements of the audio, usually music, to give a 360-degree feeling, as well as turning bassier tones into a physical vibration via “tactile transducers” in each front seat’s backrest. Good for bassline junkies, then (apologies to Mr. Rascal).

With the $9400 'Plus Package', the E-Class also comes with 'Airmatic' suspension and rear-axle steering (which I’ll touch more on later), power-closing doors, 'Urban Guard' to monitor your vehicle while it’s parked, an illuminated grille up front, a more capable version of the MBUX 'Interior Assistant', four-zone climate control and Mercedes’ 'Digital Light' function, which uses the more-than one-million pixels in the headlights to project onto the road or surface in front of you when turning the car off or in driving situations to alert road users of potential danger.

A $6200 'Energising Package' adds multicontour front seats with comfort headrests, upgraded climate controls with 'Air-Balance' and fragrances, upgraded seat heating with armrest heating for the front occupants and heated seats for the rear.

As the alphanumerics suggest, the G80 3.5T AWD is powered by a 3.5-litre twin-turbo V6 petrol engine, producing a hefty 279kW of power at 5800rpm and 530Nm of torque between 1300-4500rpm.

Tipping the scales at 2095kg (kerb), the SL’s power-to-weight ratio is 133kW/tonne.

Drive is sent to all four wheels via an eight-speed torque-converter automatic transmission. 'Normal', 'Sport' and 'Eco' modes are fitted.

This lone E-Class variant is powered by a turbocharged 2.0-litre engine pumping out 190kW and 400Nm, assisted by a 48-volt battery system. Under EQ boost, an extra 17kW and 205Nm is available for a short time.

It’s hooked up to a nine-speed auto that drives the rear wheels, and it’s all pretty traditional… for 2024, that is.

Mercedes says the E300 is able to hit 100km/h in a respectable 6.3 seconds.

Here is where the G80 has all four wheels rooted more in the past than in the future.

With no electrification of any variety (hybrid, in other words), high fuel consumption is always going to be the real price paid by going for a Euro-5 spec twin-turbo V6 weighing some 2100kg.

The official combined average figure is 11 litres per 100km, for a corresponding carbon-dioxide emissions rating of 250 grams/km. On the highway that drops to 7.9L/100km and soars to 16.3L/100km in the city cycle.

With a 73L fuel tank, that combined average number means a driver can expect around 660km of range between refills of 95 RON premium petrol, though Genesis says this G80 will also run on E10 ethanol blend.

Now, our trip computer said that we averaged less than the official figure, at just 9.7L/100km, but our pump-to-pump testing ended up being 11.4L/100km. Which isn’t that bad.

Mercedes claims the E-Class drinks 7.2L/100km on the combined cycle, and though we weren’t able to test that properly at the pump on the launch program, the trip computer showed up to 9.4L/100km after some quite spirited driving, which gradually averaged out to about 8.6L/100km in the afternoon once some more calm, E-Class-appropriate distance had been covered.

With its 50L fuel tank, the E-Class should theoretically be able to cover 694km on a single tank if the 7.2L/100km is achieved, though realistically it would be much less, 550-600km depending on driving style.

The Genesis G80 3.5T AWD SL drives in a similar way to the big brutish American-inspired Caprice and HSV Grange V8s, in that it delivers effortless, lazy performance with a sophisticated twist.

No slouch off the line even in Eco mode, the twin-turbo V6 leaps into action if you’re heavy on the throttle in Comfort mode, hunkering down as the speed piles on quickly.

With 'Launch Control', the claimed 0-100km/h sprint time is 4.9 seconds, though in regular mode it is rated at 5.1s on the way to a top speed of 250km/h.

And while the enhanced exhaust orchestrates a nice warble from behind, it remains a strong, smooth and silent performer.

The AWD system is RWD-biased and is continuously variable according to prevailing conditions, performance and grip.

The SL also features an electronic limited-slip differential for better traction and grip, as well as rear-wheel steering that either counter-steers the rear wheels in relation to the front ones for a tighter turning circle (11.8m) or parallel steers them for “enhanced steering responsiveness and stability at high speed.”

Selecting 'Sport' or 'Sport+' is met with distinctly more-urgent responses, with the transmission holding on to ratios as the revs approach the red line, which can be annoying around town.

It’s quite surprising – and probably a good thing – that the beautifully balanced and connected steering can be light and easy when you’re relaxed, and yet hefty to the point of feeling heavy when you’re really on it. Likewise, the brakes in 'Comfort' are pleasantly progressive. In 'Brake Sport' they’re fiercely responsive.

Note that, in Sport+ with the safeties off, the SL's tail can become very playful indeed, even in bone-dry conditions.

Suspension is via multi-links at both ends of the car, whilst the SL grade includes what Genesis calls “Road Preview Electronic Control Suspension (ECS)”, that scans the road ahead and then adjusts the adaptive dampers for better ride comfort.

That all said, the Genesis’ sheer size and weight keep it from feeling like an out-and-out sports sedan. The speed and AWD grip is there - tyres are Michelin Pilot Sport 4S (245/40 fr - 275/35 rr) - and the handling results in some pretty astounding agility for one so large, but the steering connection, balance and alacrity are more about confidence and competence than light-footed athleticism.

This is no cut-price BMW M5. But HSV Grange owners might recognise something in its muscular good manners.

And what of the SL’s four-wheel steering? It provides a degree of tuck-in at speed which can catch out the unaware driver, though of course, it is also a boon for round-town manoeuvrability. The tight turning circle that ensues is incredible for one so long.

Ultimately, though, it is a large and heavy sedan that never quite stops feeling that way. It won’t shrink around you despite being an easy and rewarding car to drive.

Out in the wet, the AWD contributes to the G80’s squatted-down attitude, feeling impervious to prevailing external conditions.

But it’s also not quite the sumptuous luxury liner that, say, a Mercedes S450 is.

Very civilised on smooth roads, with a decent level of absorption from the multi-link suspension, the G80 struggles a little with smaller-frequency bumps at times, but then does a great job smothering the larger ones. It is certainly within the luxury sedan expectations for refinement, isolation and ride comfort, but just not the best.

If you stick with freeways and highways, this thing will bring years of civilised pleasure and punchy performance. It is a rapid yet relaxed grand touring family cruiser.

While the E-Class has taken fairly sizeable steps in terms of its tech, it remains a fairly traditional car from behind the wheel, save for a few small changes like its mild-hybrid system and rear-wheel steering.

It’s still a petrol-powered rear-drive sedan, and it feels built more for eating up highway kilometres than it does tackling twisty turns. But that’s okay, because it will still do the latter.

Comfort is the main focus, clearly, for the E300, and the big Merc does it well. We weren’t offered a car without Airmatic air suspension on the launch, but the E-Class doesn’t seem like it would be particularly rough without it.

With it, however, large bumps and minor road annoyances only make their way into the cabin in the sense that you’re aware of them, but not bothered by them.

That slight dulling of feedback does extend to the steering wheel however, where, despite the rear-wheel steering making the car more nimble, the feedback to the driver is less encouraging of eager driving. 

While 190kW on paper doesn’t seem like enough, the E-Class makes do with its meagre engine quite well - and even though it can seem like it’s working a bit too hard at times, the E-Class’ natural state isn’t responding to a planted foot, so it’s unlikely to be a daily bother.

Engine noise, as well as wind and road noise are suitably dulled by the E300’s NVH fitout, too.

The tuning of its drive modes, in particular Comfort and Sport, seemed well-judged on our drive loop, with the option to set the 'Individual' mode to a custom configuration, most elements in Comfort while the drivetrain is set to Sport is particularly helpful when on gentle, high-speed country roads.

If you do start to approach the limits of the big sedan’s capability, it’ll let you know fairly early on. The heavy E-Class isn’t prone to sudden lurching or poor handling, and isn’t much phased by mid-corner bumps.

It’s not as dynamically engaging as some rivals, particularly the 5 Series, but it does appear to be a better provider of cross-country comfort.

ANCAP hasn’t had a go at crash-testing the E-Class yet, and it might not given the relatively small number that will be sold here compared to volume models, but Mercedes’ track record with safety is pretty stellar, and it’s extremely rare for a Mercedes to not cop the maximum five stars.

In the new E300 there are 11 airbags - plenty for a sedan. Mercedes lists front airbags, knee bags and pelvic/thorax airbags for the driver and front passenger, side bags for the rear and a front centre airbag.

It also comes with a fairly extensive suite of safety tech, including the usual ABS, lane-keep assist, blind spot monitoring and surround-view parking cameras.

But on top of that, there’s also ‘Evasive Steering Assist’, semi-automated cruise control with sign recognition, distance assist for following leading vehicles and can even project light arrows onto the road if leaving your lane, when 'Digital Lights' are optioned.

The E-Class also has a function if an imminent collision is detected in which it can, depending on the type of collision, take occupant protection measures. In the case of a side-on collision, the E-Class can “move an affected front occupant towards the centre of the car” before impact.

The Genesis G80 comes with a five-year/unlimited kilometre warranty, five years of what it calls 'premium' roadside assistance (increased to 10 years if serviced at a Genesis dealer) and five years/75,000km of free servicing. Service intervals are every 12 months or 15,000km.

While these are about on-par with most brands, it is behind better mainstream warranty and aftersales services, which are seven, and in a few cases, 10 years in length.

The E-Class comes with Mercedes’ fairly industry standard five-year, unlimited kilometre warranty, though Mercedes-Benz Australia was unable to confirm exact servicing pricing on the launch. 

It does however list pricing for the E-Class on its website for a three-service pack at $3325, four at $4535, and five at $6800, the latter averaging out to $1360 each.

This could increase with the new generation car, and Mercedes doesn’t list estimated serving pricing for new E-Classes yet in its booking system (I checked with one of the test cars).

Servicing intervals are every 12 months or 25,000km, whichever comes first.